货币的三个基本手段是(法定存款准备金率、再贴现和公开市场业务)。https://iknow-pic.cdn.bcebos.com/c2fdfc039245d6881b8b68dbb4c27d1ed31b24c0?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto